I just learned the other day that the Visigoths and most Germans who originally converted to Christianity converted as Arians which means they didn't believe in the holy trinity. They believed Jesus came from God but wasn't God.
Truthfully, this is what I've always believed about Christianity also but I never knew the term was Arian or that it was a fairly popular belief until the Catholic Church forced everyone to convert to the Holy Trinity belief system.
You should avoid both Islam and Arianism.
Every depiction of Muhammad describes him as white. Whiter, even, than what would have been normal for the area at the time (mediterannean pretty much) but rather being extremely pale with dark (and in some depictions, but less reliable, red) hair. His living verified descendant, a scholar from syria, looks like Connor McGregor.
Everyone now also just gets lumped under the term arab if they speak Arabic, regardless of if they're the children of Ishmael at all whatever. A Lebanese person is 90% canaanite and in many cases can claim no descent from the patriarch Ishmael at all, nor any gulf tribes or bedouins, but they're still called Arabs